We knew it was going to get cold last night so we ran a long extension cord with a heat lamp into the well put and put the top back on. Woke up this morning to no water and the light is off... circuit popped. Nothing is obviously cracked and there is no water in the pit but I' not sure where to even start with thawing this thing out. I put a propane heater down there for now but nothing yet.

Anyone have an idea where I should focus my attention with a heat gun or propane torch? It's a mix of copper and PVC down there but I'm not sure what's going where.

We have the added benefit of radiant heat so this should be a fun day.